Feeding device for pulverous fuel in furnaces for locomotives and the like



K. H. v.'v0N PORAT. FEEDING DEVICE FOR PULVEROUS FUEL IN FURNACES FOR LQCOMOTIVES AND THE LIKE.

APFLICATION FILED IUNE 3,19I9.

Patentefi NOV, 2, 1920.

UNITED sr resrArsaiT oFFIcE.

KARL HJALMAB LILI-IELM VON EPGELAT, OF ESTGGKHOLM. SWEDEN, ASSIGNOR' TO IVIO'IALA "i/ERKSTADQ NEAL AKTIEBQLAG, 0F MUTALA WEEKS-TAD, SWEDEN,

A CORPORATION.

FEEDING DEVICE FOR PULVEROUS IN FURNACES FOR LQCOMGTIVES AND THE original application filed October 12. 191 ,-eria1 No. 125,223.

To all whom it may concern lie it known that 1, 1mm h'JALMAn VIL- rrnLM voN Pona'r, subject of the King of iv l r 'l' Q lll 9 l i at on, iesicing at tJtOL/IIO in, lwecen, have invented certain new and useful Imilk'fldlfiilltillts in Feeding Devices for Potion T 'n ous duel 1n eurnaces for Locomotlves and the like, of which the following is a specification.

The present invention relates to such feeding devices for pulverous fuel in fur naces, where the powder is fed from a powder receptacle to the furnaces by means of a gaseous medium, which whirls up and brings along with it a quantity of fuel to the furnace through a powder pipe or 0011- duit, extending between the receptacle and the furnace.

The invention consists in. certain improvements in the adjacent ends of the powder conduit and the gas or air supply pipe.

"the in i-Lion essen ially characteriand by the fact, that at the same time as the fuel transporting air current or currents is prevented from ilowingin a straight line into the fuel. outleta member for covering ill outlet oi said air supply pipe mo;- able in relation to the discharge end of said pipe in such a way, that by adjusting one of them the outlet oi. the air supply pipe can be covered or uncovered to any desired degree or wholly covered by said member. The said member forms preferably a part of the fuel pipe.

Bin embodiment of the invention is i.llus trated in the accompanying drawing. Figure 1 shows a longitudinal section of a tender for pulverous fuel. with a feeding device according to the present invention. 2 shows on a larger scale the device in the position for interrupted feed and Fig. 3-3 the same in the position for full feed. Only the lower part of the receptacle and the adjacent ends of the fuel and air pipes located in said receptacle part are shownin Figs. 2 and 3.

In the embodiment shown the air current necessary for the feed is effected by means of pressure air supplied through the conduit 9.

That part of the fuel pipe 1 which is located in the powder receptacle 20 consists Eatontecl Nov. 2, 1920.

Divided and this application filed June 3,

Serial No. 301,546.

of a metal pipe 2, which extends near and along the one of the two inclined and downwardly converging walls 21 of the receptools 20. The discharge end of the air supply conduit 9, which is supplied with compressed air, is indicated by d. This discharge end or pipe projects into the receptacle from below and opposite the receiving opening of the fuel pipe, which opening forms the fuel outlet of the receptacle.

The pipe 2 is rotatably mounted in the receptacle in bearings 22, so that it can be rotated around its own longitudinal axis by means of a handwheel 27 or the like, arranged on the outside of the receptacle.

l-liccording to the embodiment shown the receptacle is arranged on a tender of a locomotive, and in such a way, that the handle of the pipe 2 is conveniently accessible from the drivers cabin.

The lower edge of the pipe lies in a plane, which forms an inclined angle to the longitudinal axis of the pipe, so that the lower end of the pipe forms a tongue, or projection, which overlaps the pipe l on one side. -The pipe 4:, which tapers conically toward its free end, is provided on the upper side with a plurality of line holes 5.

Although the holes 5 thus are arranged laterally on the pipe 4 they are faced upward by reason of the tube 4 having an inclined position.

.iccording as the nipe 2 is rotated to the one or other position the holes 5 are covered or uncovered to any desired. degree by the lower end or projection of the pipe 2. In the position shown in Fig. 2 the holes 5 are wholly covered by the end of the fuel pipe 2, and. in the position shown in Fig. 8 the holes are wholly uncovered by the pipe 2. The former position is the position for entirely interrupted feed, and the latter position is the position for full feed.

Referring to F 23 it will be understood, that by supplying pressure air through the conduit 9 air will flow out into and pene- 'ate the powder mass in the receptacle uan ty of the powder mass will be whirled up thereby partly on account o the pressure in 4 and partly on account oi h the holes 5, so that the adjacent ing an air current or currents from of the draft in the furnace will be forced or brought along with the air through the fuel conduit to the furnace. The pipe & has a. central opening 8 at the point through which air is blown directly into the fuel pipe, whereby thc blowing of the whirled up powder to the furnace through the fuel pipe ,is highly supported. On account thereof that the fuel transporting and whirling up air currents flowing out from the holes of pipe l are prevented from flowing in a straight line into the fuel .pipe, the powder will be effectively whirled up and intimately miXcdwith air before escaping into the fuel pipe.

On account tllGPGOI that fuel pipe extends upwardly from its receiving end powder 1S prevented from falling by gravity into the fuel pipe. Thus no powder but that whirled up by the air currents from 5 can escape to the furnace.

According to the embodiment shown the powder feed is regulated by the angular adjustment of the pipe 2 without displac ing said pipe endwise.

It is evident that the construction can be modified in such a way, that the'pipe 4: instead of pipe 2 made rotatable or both pipes can be'angularly adjustable.

The pipe may in both cases lead directly from the atmosphere and the feed be effected'only by means of suction into the powder pipe.

What I claim as new and desire to secure by Letters Patent of the United States 1. in a feeding device for pulvcrulent fuel' for furnaces the combination of a powder receptacle, a fuel pipe extending from said receptacle to the furnace, a pipe for supplying air or other gaseous medium into the mass in said receptacle, means for causing an air current or currents from said supply pipe to'whirl up and bring along 7 with it a quantity of fuel from the receptacle through thefuel pipe, the adjacent end of the pipesbeing arranged in such way that the said fuel transporting aircurrent is prevented from flowing in a straight line into the fuel outlet, a niember for cov ering the outlet of said air supply pipe, said member and thediscbarge end of the air supply pipe being; movable 1n. relation to each other in such a way, that by adjusting one of them the outlet of the air supply pipe can be covered or uncovered to any desired degree by said member.

2. In a feeding device for pulverulent fuel for furnaces the combination of a powder receptacle, a fuel pipe extending from said receptacle to the furnace, a pipe for supplying air or other gaseous medium into the mass in said receptacle, means for ea sgas supply pipe to whirl up and bring: along with it a quantity of fuel from the transporting: current being arranged is receptacle through the fuel pipe, the adjacent ends of the pipes being arranged in such 'way that the said fuel transporting air current is prevented from flowing in a straight line into the fuel outlet, a member for covering the outlet of said air supply pipe, said member and the discharge end ing an air current or currents from said gas supply pipe to whirl up and blififj along with it quantity of fuel om the receptacle through the fuel pipe. the adjacent ends of the pipes being arranged in such way that the said fuel transport-u.

air current is prevented from flowing in a straight line into the fuel outlet, a member for covering the outlet of said air supply pipe, said member and the discharge end of the air supply pipe being movable in relation to ea ch mzheiin such a. way, that by adjusting one of them theoutlet of tr air supply pipe can be wholly covered said member, the outlet for the said 4 ally on said air supply pipe.

f. In a feeding device for pub. fuel for furnaces the combination of a pow der receptacle, a fuel pipe'e): ending from said receptacle to the furnace, a pipe for supplying air or other gaseous medium into the mass in'said receptacle, means for causing an air current or currents from said gas supply pipe to whirl up and bring with it a quantity offuel from'the receptacle through. the fuel pipe, the adjacent ends of the pipes being arranged in such way that the said fuel transporting air current is preveru'ied from flowing in a straight line into the fuel outlet, a member ruleut for covering the' outlet of said air supply pipe, said m'ember and the discharge end of the air supply pipe being movable in relation to each other in such a way,that by adjusting one of them the outlet of the air supply pipe can be covered or uncovered to any desired degree by said member, the outlet of said air supply pipe consisting of a i ilurallty of fine holes. fd'" l' 1 1 o. in a ee 111g cevice ioi puveiuent fuel for furnaces the combmation of a powder receptacle, a fuel pipe extending from said. receptacle to the furnace, a pipe for supplying air or other gaseous medium. into the mass in said receptacle, means for causing an air current or currents from said gas supply pipe to whirl up and bring, along With it a quantity of fuel from the receptacle through the fuel pipe, the adjacent ends of the pipes being arranged in such Way, that the said fuel transporting air current is prevented from flowing in a straight line into the fuel outlet, means for causing the airoutlet of said air supply pipe to be covered or uncovered to any desired degree by the pulverulent fuel in the receptacle.

6. In a feeding device for pulverulent fuel for furnaces the combination of a powder receptacle, a fuel pipe extending from said receptacle to the furnace, a pipe for supplying air or other gaseous medium into the mass in said receptacle, means for causing an air current or currents from said gas supply pipe to whirl up and bring along with it a quantity of fuel from the receptacle through the fuel pipe, the adjacent ends of the pipes being arranged in such way that the said fuel transporting air current is prevented from flowing in a straight line into the fuel outlet, one of said pipeends being adjustable, means for causing the air outlet of said airsupply pipe to be covered or uncovered to any desired degree by the pulverulent fuel in the receptacle when adjusting one of said pipes.

7. In a feeding device for pulverulent fuel for furnaces the combination of a powder receptacle, a fuel pipe extending from said receptacle to the furnace, a pipe for supplying air or other gaseous medium into the mass in said receptacle, means for causing an air current or currents from said gas supply pipe to whirl up and bring along with it a quantity of fuel from the receptacle through the fuel pipe, the adjacent ends of the pipes being arranged in such way, that the said fuel transporting air cur rent is prevented from flowing in a straight line into the fuel outlet, means for causing the outlet of said air supply pipe to be wholly uncovered by the pulverulent fuel in I the receptacle, the outlet of the air supply pipe for the said fuel transporting air currents being faced upward;

8. In a feeding device for pulverulent fuel for furnaces the combination of a powder receptacle, a fuel pipe extending from said receptacle to the furnace, pipe for supplying air or other gaseous medium into the mass in said receptacle, means for causing an air current of currents from said gas supply p pe to wh1rl up and bring along with it a quantity of fuel from the receptacle through the fuel pipe, the adjacent ends of the pines being arranged in such way that the said fuel transporting aircurrent is prevented from flowing in a straight line into the fuel outlet, means for causing the outlet of said air supply pipe to be wholly uncovered by the pulverulent fuel in the receptacle, the outlet for the said fuel transporting current being arranged laterally on said air supply pipe.

9. In a feeding device for pulverulent fuel for furnaces the combination of a powder receptacle, a fuel pipe extending from said receptacle to the furnace, a pipe for supplying air or other gaseous medium into the mass in said receptacle, means for causing an air current or currents from said gas supply pipe to Whirl up and bring along with it a quantity of fuel from the receptacle through the fuel pipe, the adjacent ends of the pipes being arranged in such way that the said fuel transporting air current is prevented from flowing in a straight line into the fuel outlet, means for causing the outlet of said air supply pipe to be wholly uncovered by the pulverulent fuel in the receptacle, the outlet of said air supply pipe consisting of a plurality offine holes.

10. In a feeding device for pulverulent fuel for furnaces the combination of a pow der receptacle, a fuel pipe extending from said receptacle to the furnace, a pipe for supplying air or other gaseous medium into tain position the outlet of'the air supply pipe can be wholly uncovered by the pulverulent fuel in the receptacle. said air supply pipe having upwardly faced discharge openings for the said fuel trans 'iortingair currents.

11. In a feeding device for pulveruhuit fuel for furnaces the combination of a powder receptacle. a fuel pipe extending from said receptacle to the furnace, a pipe for supplying air or other gaseous medium into the mass in said receptacle. means for causing an air current or currents from said gas supply pipe to whirl up and bring along with it a quantity of fuel from the receptacle through the fuel pipe, the adjacent ends of the pipes being arranged in such way that the said fuel transporting air current is pre vented from flowing in a straight line into the fuel outlet, the adjacent ends of said two pipes being adjustable in such way, that by adjusting one of them to a certain position the outlet of theair supply pipe can be the: receptacle, the outlet for the said fuel.

transponting current being arrangedlater- V ally on said air supply plpe.

12. In a feedlng (lGVlCB for pulverulent fuel for furnaces the comb nation of a powder receptacle, a fuel pipe extending from said receptacle to the furnace, a pipe for air supply pipe, a lateral outlet on said air supply pipe, said sleeve and said discharge end being movable in relation to I each other in such a way, that by adjusting one of them the outlet of the air supply pipe can be covered or uncovered to any desired degree. V

13. In a feedlng device for pulverulent fuel for furnaces the combination of a powder receptacle, a f-uel'pipe' extending from said receptacle to the furnace, a pipe for supplyinga gaseous medium into the mass in said receptacle, one of said pipes being rotatably mounted in the receptacle, and

means for varying the mutual positions of the receiving end of the fuel pipe and the delivering end of the'gas supply pipe by an angular adjustment .of the said rotatable pipe without displacing the pipe endwise.

means for preventing the fuel from falling by gravity into the fuel pipe. 7

14. In a devicefor supplying pulverulent fuel to a locomotive furnace the combination of a tender having a powder receptacle, a pipe for supplying a gaseous medium into said receptacle, a fuel pipe extending from said receptacle to the furnace, one of said pipes being rotatably mounted in the receptacle, means for causing the air outlet of said air supply pipe to becove red or uncovered to any desired degreeby the pulverulent fuel in the receptacle, means for preventing the fuel from falling by gravity into the fuel pipe, means for rotating said rota table pipe, said means being accessible from I the locomotive conductor room. V

said receptacle to the furnace, a pipe for:

supplying a. gaseous medium into the mass in said receptacle, one of said pipes being rotatably mounted in the receptacle, and means for varying the mutual position of the receiving end'of the fuel pipe and the delivering' end of the gas supply pipe by an angular adjustment of the said rotatable pipe without displacing the pipes endwise,. means for preventing the fuel from falling by gravity into the fuel pipe, means for causing an air current or currents from said gas supply pipe to Whirl up and bring along with it a quantity of fuel from. the receppipe.

fuel for furnaces the combination of a powder receptacle, a fuel pipe extending from said receptacle to the furnace, a pipe for supp-lying air or other gaseous medium into the mass in said receptacle, means for causing an air current or currents'from said gas supply pipe .to whirlup and bringalong with it a quantity of-fuel from the receptacle through the fuel pipe, means forcausing the outlet of said air supply to be wholly uncovered by the pulverulent fuel in the receptacle, the outlet for the said fuel transporting current being arranged laterally on said air supply pipe.

7 gas supply pipe to whirl up and bring along with it'a quantity of fuel from the receptacle through the fuel pipe, means for causing the outlet of said air supply pipe to be wholly uncovered by the pulverulent fuel in the receptacle, the outlet of said air supply pipe consisting of a plurality of fine holes.

18. In a feeding device for pulverulent fuel for furnaces. the combination of a powder receptacle, a fuel pipe extending from sald receptacle to the furnace, a pipe for supplying air-or other gaseous medium into the mass in saidreceptacle, means'for causing an air current or currents from said gas supply pipe to Whirl up and bring along with it a quantity of fuel from the receptacle through the fuel pipe, the discharge 1 end of the air supply pipe being located within the interior of the receptacle, an outlet from said discharge end to the interior of the receptacle, a member for covering 7 said outlet, said member and thedischarge end of the air supply pipe being movable in relation to each other in such away, that by-adjusting one of them said outlet can be wholly covered by said member, said outlet beingarranged laterally on said air supply '19. Ina feeding device for pulverulent fuel for furnaces the combination of a powder receptacle, a fuel pipe extending from said receptacle to the furnace, a pipe for supplying air-or other gaseous medilum into the mass in said receptacle, means for Ill causing an air current or currents from said gas supply pipe to Whirl up and bring along with it a uantity of fuel from the receptacle through t e fuel pipe, the discharge end of the air supply pipe being located Within the interior of the receptacle, an outlet from said discharge end to the interior of the receptacle, a member for covering said outlet, said member and the discharge end of the air supply pipe being movable in relation to each other in such a Way, that by adjusting one of them said outlet of the air supply pipe can be covered or uncovered to any desired degree by said member, said outlet consisting of a plurality of fine holes.

20. In a feeding device for pulverulent fuel for furnaces the combination of a powder receptacle, a fuel pipe extending from said receptacle to the furnace, a pipe for supplying air or other gaseous medium into the mass in said receptacle, means for causing an air current or currents from said gas supply pipe to Whirl up and bring along with it a quantity of fuel from the recep tacle through the fuel pipe, the discharge end of the air supply pipe being located within the interior of the receptacle, an outlet from said discharge end to the interior of the receptacle, the adjacent ends of one of said pipes being adjustable, means for causing the outlet of said air supply pipe to be covered or uncovered to any desired degree by the pulverulent fuel in the receptacle when adjusting one of said pipes.

21. In a feeding device for pulverulent of the pipes being arranged in such way that the said fuel transporting air current is prevented from flowing in a straight line into the fuel outlet, a member forming a part of the fuel pipe and serving to cover the outlet of the air supply pipe, the two pipes being movable in relation to each other in such a way,.that by adjusting one of them said outlet can be covered or uncovered to any desired degree by said member.

In testimony whereof I afiix my signature in presence of two Witnesses.

KARL HJALMAR VlLl-IELM von PORAT. Witnesses;

Gnnrs PRIEN, Emu WAHMAN. 

